Does it actually state anywhere that you can't do it and if not, what rule did she break?
Yes I know that it was an idiotic thing to do, but people should be aware that unless it clearly states that it is only acceptable in emergencies, then someone will do it! And it would have to be clearly stated they couldn't, because common sense doesn't count for anything (take the hot beverages scalding people for example). Had she injured herself, then I'm sure she would have sued and been awarded damages.
Don't think I am defending her actions btw, but unfortunately you have to account for stupidity.